From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julien Grall <julien.grall@citrix.com>
Subject: Re: [RFC PATCH v2 13/22] xen/arm: its: Add virtual ITS
 command support
Date: Wed, 29 Apr 2015 13:21:11 +0100
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To: Manish Jaggi <mjaggi@caviumnetworks.com>, Julien Grall <julien.grall@citrix.com>, Vijay Kilari <vijay.kilari@gmail.com>
Cc: Ian Campbell <ian.campbell@citrix.com>, Stefano Stabellini <stefano.stabellini@eu.citrix.com>, Prasun Kapoor <Prasun.Kapoor@caviumnetworks.com>, Vijaya Kumar K <vijaya.kumar@caviumnetworks.com>, Julien Grall <julien.grall@linaro.org>, Tim Deegan <tim@xen.org>, "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>, Stefano Stabellini <stefano.stabellini@citrix.com>, manish.jaggi@caviumnetworks.com
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On 29/04/15 13:12, Manish Jaggi wrote:
>>> and that too
>>> ITS is not in critical path.
>>> It is only used when configuring interrupts of the device?
>> You need to think about security... Even though the ITS should only be
>> used for configuring interrupts, a malicious guest could try to exploit
>> weakness in the emulation.
> Can you describe the scenario ?

I already wrote several times the possible security impacts of the
polling solution... Please read again the previous mails.

Regards,

-- 
Julien Grall